Shell Refrigeration Oil S4 FR-F 32 is a high-performance synthetic polyol ester (POE) compressor lubricant developed for use with HFC refrigerants, delivering superior wear protection and extended maintenance intervals in refrigeration systems.
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Shell Refrigeration Oil S4 FR-F 32

Old product name: Shell Clavus Oil R

Shell Refrigeration Oil S4 FR-F 32 is a high-performance synthetic polyol ester (POE) compressor lubricant developed for use with HFC refrigerants, delivering superior wear protection and extended maintenance intervals in refrigeration systems.

Category:

Shell Refrigeration Oil S4 FR-F 32

( Previously named: Shell Clavus Oil R )

Synthetic POE-based lubricant for HFC refrigeration compressor systems

  • Specifically formulated for R134a and other HFC refrigerants

  • Excellent thermal and oxidation stability supports long service life

  • Provides critical wear protection for pistons and bearings in reciprocating compressors

  • Fully compatible with rotary and reciprocating compressor types

  • Approved for use in open, semi-hermetic, and hermetic compressor designs

  • Fully miscible with HFC refrigerants across typical refrigeration temperature ranges

  • Maintains floc point of -50 °C and refrigerant stability up to 96 °C

  • Compatible with all sealing materials commonly used in HFC-based systems

  • Formerly known as Shell Clavus Oil R

Global Product Code: 001D8394



Application:

Shell Refrigeration Oil S4 FR-F 32 is an advanced synthetic refrigeration compressor oil based on polyol ester (POE) chemistry. It is designed for compatibility with R134a and other HFC refrigerants and is recommended for use in all types of compressor systems across commercial, domestic, and industrial applications. This product was formerly marketed as Shell Clavus Oil R.

Performance Features & Benefits:

  • Extended Maintenance: High resistance to thermal breakdown and oxidation ensures longer service intervals even under elevated compressor discharge temperatures.
  • Reliable Wear Protection: Formulated to reduce wear in critical components such as pistons and bearings, especially in reciprocating compressors.
  • Refrigerant Compatibility: Fully miscible with R134a and other HFC refrigerants over a wide range of refrigeration operating temperatures.

Main Application Areas:

  • Refrigeration compressors: open, semi-open, and hermetic designs
  • Rotary and reciprocating compressor systems
  • Commercial, industrial, and domestic HFC refrigeration systems

Specifications & Approvals:

  • Meets DIN 51503 KD

Environmental & Safety Information:

  • Use impervious gloves and avoid prolonged or repeated skin contact with used oil.
  • Dispose of used product at authorized collection points—do not release into drains or the environment.
  • Safety Data Sheet (SDS) available via inquiry

Technical Specifications:

Property Typical Value Method
ISO Viscosity Grade 32 ISO 3448
Refrigerator Oil Group KD DIN 51503
Kinematic Viscosity @ 40 °C 31 mm²/s ISO 3104
Kinematic Viscosity @ 100 °C 6 mm²/s ISO 3104
Density @ 15 °C 1018 kg/m³ ISO 12185
Flash Point (COC) 220 °C ISO 2592
Pour Point -54 °C ISO 3016
Neutralisation Number (TAN) 0.06 mg KOH/g ASTM D664
Floc Point with R134a -50 °C DIN 51351
Refrigerant Stability @ 250 °C 96 °C DIN 51393
Miscibility Fully miscible across standard refrigeration temperatures —

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